cirq_google.serialization.arg_from_proto

Extracts a python value from an argument value proto.

Main aliases

cirq_google.serialization.arg_from_proto(
    arg_proto: v2.program_pb2.Arg, *, required_arg_name: (str | None) = None
) -> (ARG_RETURN_LIKE | None)

Args
`arg_proto`	The proto containing a serialized value.
`required_arg_name`	If set to `None`, the method will return `None` when given an unset proto value. If set to a string, the method will instead raise an error complaining that the value is missing in that situation.

Returns
The deserialized value, or else None if there was no set value and `required_arg_name` was set to `None`.

Raises
`ValueError`	If the arg protohas a value of an unrecognized type or is missing a required arg name.

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Last updated 2026-10-08 UTC.

Args